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-rw-r--r--src/libserialize/lib.rs2
1 files changed, 0 insertions, 2 deletions
diff --git a/src/libserialize/lib.rs b/src/libserialize/lib.rs
index b8eeb4d2b34..2ad85c603d1 100644
--- a/src/libserialize/lib.rs
+++ b/src/libserialize/lib.rs
@@ -8,8 +8,6 @@ Core encoding and decoding interfaces.
        html_playground_url = "https://play.rust-lang.org/",
        test(attr(allow(unused_variables), deny(warnings))))]
 
-#![deny(rust_2018_idioms)]
-
 #![feature(box_syntax)]
 #![feature(core_intrinsics)]
 #![feature(specialization)]